Fix an issue that external protocol in subframes are not handled on Android

chrome/chrome_browser.gypi

 # Copyright 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 373 matching lines @@
       'browser/download/download_ui_controller.h',
       'browser/download/drag_download_item.h',
       'browser/download/save_package_file_picker.cc',
       'browser/download/save_package_file_picker.h',
       'browser/enumerate_modules_model_win.cc',
       'browser/enumerate_modules_model_win.h',
       # Oh hey, all the cool browser/extensions files are hanging out in
       # chrome/chrome_browser_extensions.gypi.
       'browser/external_protocol/external_protocol_handler.cc',
       'browser/external_protocol/external_protocol_handler.h',
+      'browser/external_protocol/external_protocol_observer.cc',
+      'browser/external_protocol/external_protocol_observer.h',
       'browser/file_select_helper.cc',
       'browser/file_select_helper.h',
       'browser/file_select_helper_mac.mm',
       'browser/flags_storage.h',
       'browser/fullscreen.h',
       'browser/fullscreen_chromeos.cc',
       'browser/fullscreen_mac.mm',
       'browser/fullscreen_win.cc',
       'browser/geolocation/chrome_access_token_store.cc',
       'browser/geolocation/chrome_access_token_store.h',
@@ skipping 508 matching lines @@
       'browser/download/download_danger_prompt.cc',
       'browser/download/download_danger_prompt.h',
       'browser/download/download_shelf.cc',
       'browser/download/download_shelf.h',
       'browser/download/download_shelf_context_menu.cc',
       'browser/download/download_shelf_context_menu.h',
       'browser/download/notification/download_notification_item.cc',
       'browser/download/notification/download_notification_item.h',
       'browser/download/notification/download_notification_manager.cc',
       'browser/download/notification/download_notification_manager.h',
-      'browser/external_protocol/external_protocol_observer.cc',
-      'browser/external_protocol/external_protocol_observer.h',
       'browser/feedback/feedback_profile_observer.cc',
       'browser/feedback/feedback_profile_observer.h',
       'browser/feedback/show_feedback_page.cc',
       'browser/feedback/system_logs/about_system_logs_fetcher.cc',
       'browser/feedback/system_logs/about_system_logs_fetcher.h',
       'browser/feedback/system_logs/log_sources/chrome_internal_log_source.cc',
       'browser/feedback/system_logs/log_sources/chrome_internal_log_source.h',
       'browser/feedback/system_logs/log_sources/memory_details_log_source.cc',
       'browser/feedback/system_logs/log_sources/memory_details_log_source.h',
       'browser/feedback/system_logs/scrubbed_system_logs_fetcher.cc',
@@ skipping 2896 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }